Sharpener for cutlery.



J. A. WILKINSON. SHABPENEB. FOR OUTLEBYL APPLICATION FILED APR. 23,.1908.

Patented Feb. 8, 1910.

Mai 17% 76 ATTORNEYS KINSON, a citizen of the Dominion of Can- 'others skilled in the art to which it apperby means of paper coated therewith. More- JOHN ALLAN WILKINSON, OF NEW YORK, N. Y.

SHABPENER FOR CUTLERY.

Specification of Letters Patent.

Patented Feb. 8, raid.

Application filed April 23, 1908. Serial N 0. 428,799.

To all whom 'Li may concern:

Be it known that I, Jonn ALLAN l/VIL- ada, residing in the city, county, and State of New York, have invented certain new and useful Improvements in Sharpeners for Cutlery; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable coins to make and use the same.

My invention relates to certain new and useful improvements in sharpener-s for cutlery, and is designedto furnish a simple, eiiicient and durable construction of relatively small cost, and that may be embodied in appropriate-specific forms adapted for various conditions of use.

In the accompanying drawing, Figure 1 represents, partly in side elevation and partly in longitudinal section, one form or modification of my invention. Fig. 2 represents a cross sectional view taken on a plane indicated by the line 2- -2 of Fig. l; and Fig. 3 represents, in side elevation, another form or modification of the invention.

Similar letters of reference indicate similar parts throughout the several views.

Referring to the drawing, and particularly to Figs. 1 and 2 thereof, a indicates an abradin disk, preferably of carborundum and which is flanked on each side by the dome-shaped guides 5 of any suitable material, as, for instance, of sheet brass or other metal. A wood-screw c passing through the dome-shaped guides b ahd the abrading disk a, unites them to the cylindrical stems (Z and a, one of which (d) serves as a handle, when the sharpener is put in use. The stem at is also provided with a guide f, constituting the frustum of a cone.

In the modification shown in Fig. 3 the sharpener is likewise provided with an abrading disk which, in this case, may convenientiy consist of a main body portion 9, having abrading material such as carborundum applied to its surface, as for instance,

over, in this instance, the domeshaped guides b are integral with the stems a? and e; and the wood screw 0, as before, firmly holds the parts together clamping the abrading disk stationary.

in using the sharpener, for knives, the cutting edge of the knife is first guided by one of the dome-shaped guides into contact with one side of the abrading disk in the angle between said side and the adjacent guide and it is drawn back and forth a few times. T hereupon, it is removed, and either re-inserted end for end in the same place, or is guided by the other dome-shaped guide into contact with the other side of the abrading disk and in the corresponding angle, and is drawn back and forth in like manner as before, thereby completing the sharpening of the knife, and giving it the edge desired.

In using the sharpener,-for scissors, the scissors blades are guided into contact with the side of the abrading disk, by resting them upon the conical guide f, whose configuration brings the cutting edge into the necessary positlon for sharpening, and, by drawing the incline of the cutting edge back and forth as it is pressed against the disk the operation is completed.

It is characteristic of the action of the abrading disk upon the cutlery subjected to its sharpening action, that it imparts to the blade what is practically a saw tooth edge, in the same sense of an edge that is adapted to cut with a drawing action as is appropriate to carving knives, scissors and the like. In order to give the knife blade an edge adapt ed to general uses, the blade may be drawn thereafter, back and forth flatwise upon a disk, as 41, inserted in the end of one of the stems, as shown in Fig. 1.

Having thus described my invention, what/9o 1 claim is:

1. A sharpener for cutlery, provided with an abrading disk, and an adjacent darneshaped guide, presenting its dome surface to the face of the disk, said guide being relatively stationary with respect to the disk;

substantially as described.

2. A sharpener for cutlery, provided with an abrading disk, and dome-shaped guides on both sides of thedisk, said guides being relatively stationary with regard to the disk; substantially as described.

3. A sharpener for cutlery, provided with an abrading disk, an adjacent dome-shaped guide, and an outlying guide whose surface is of the configuration of the frustuin of a. cone; substantially as described.

4. A sharpener for cutlery, provided with a stationary abrading disk, dome-sl1aped guides on both sides of the disk said guides substantially as described.

being relatively stationary with regard to stems for the guides; substantially as tie, the disk and cylindrical stems for the guides; I

i In testimony whereof I afiix my signature,

5. A sharpener for cutlery, provided with in presence of two Witnesses.

E a stationary abrading disk, dome-shaped; JOHN ALLAN WILKINSON.

Witnesses \VILLIAM H. DAVIS, LAURA B. PENFIELD.

guides on both sides of the disk, an outlying guide Whose surface is of the configuration of the frustum of a cone, and cylindrical scribed. 10 

